Acetylene-generator.



E. R. ANGELI.

AGETYLENE GENERATOR.

APPLICATION FILED JAN.17, 1911.

Patented 001;. 7, 1913.

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ACETYLENE-GENERATOR.

Application filed January 17, 1911.

Specication of Letters Patent.

Patented @et 7, i913.

serial No. 603,178.

To all whom it may concern Be it known that T, .EDMUND R. ANGELL, a citizen of the United States, residing at Derry, in the county of Rockingham and State of New Hampshire, yhave invented a new and useful Acetylene- Generator, of which the following is a specification.

The object of my invention is to make an acetylene generator to drop calcium carbid into water automatically, and little at a time, for use in wagons, automobiles, cars.' boats, or ships, as well as in stationary locations.

For the accomplishment of this object, my invention relates toa proper application and combination of means to actuate the feeding mechanism without the use of a floating gas-holder; to cause the feed to close automatically while recharging, or in case of accident to the mechanism; to lock the feed and prevent loss of carbid when 4the machine is not in use; to prevent splashing which fouls the feeding mechanism; to provide easy access to clean, or repair, the feeding mechanism; and to prevent excessive influx of water into the generating chamber from the absorption of gas.

Since I use an expansible diaphragm for actuating the feeding mechanism, the machine may be aptly called a diaphragm-feed acetylene generator.

The drawing is a sectional elevation of the device.

The cylinderpA, represents the casing and framework. This is divided into two parts. The upper part B, is the'carbid chamber; the lower part C, is the generating chamber. The water in it may be inclosed there; or it may be there in uninterrupted communication with an external body of water agreeably to conditions and circumstances,- whether a vessel,`chamber, cistern, pond, or other body of water.

The bottom M, of the generating chamber, is funnel-shape. The pipe P, fastened in its central and lowest part, passes into any conveniently shaped vessel or body of water and suitably located, as stated above. This construction provides for the least possible quantity of water in the generating chamber, and thereby prevents trouble from splashing as much as possible. The variation in gas pressure when the machine is working, and the motion of the vehicle, cause the water to pass back and forth in the pipe P, so that the generator is always supplied with water in suitable condition to decompose the carbid. The top, or roof, of the carbid chamber is provided with a broad bed-ring E. Upon this ring, the broad cover D, is seated tightly by the cap-screws F F. The division between the parts of the casing A, consists of three frusto-conical sections G, H, and T, lapped together with the smaller end of each downward. They together form the bottom of the carbid chamber. The large end of G, is fastened to the wall of A. The section H, rests upon and partly within Gr, but is. not faste-ned to it. The extreme diameter of H, is less than the inside diameter of the bed-ring E, so it can easily pass through it. The upper edge of the section I, ,underlaps the lower edge of H, and the two are so fastened together by bands not shown as to leave a broken space between them, thus providing a free passage for the gas from the generating chamber to the service pipe J.

K, is a drip guard to prevent condensation and splashed water from entering the gas passage between H and T. L, is also a dripguard to prevent moisture getting upon the face of the stopper N. This stopper is conical and adapted to close the mouth, 0, of the carbid chamber. It is fastened to the end of the valve-stem R. The valve-stem passes'lopsely through the aXis of the cylindrical feed-check Q, whose lower end is hollow.y 4The roof of this hollow part of the cylinder rests, attimes, upon the stop, or lug, T, which 1s rigidly attached to the valve stem R, at such point that when N, is drawn up into the mouth O, the cylinder Q, resting upon T, is held high above it; and when N, is at its lowest position below O, the weight of Q, seeks to cause its sharp circumferential edge to rest upon the inner surface of l, and around the mouth O, thus automatically closing it.

S, is 'an eXpansible diaphragm fastened about its circumference tightly between the parts of the basin-shaped casing U. This casing is rigidly attached to the cover D, by

-means of the pipe V; or it may itself constitute the cover D. and thus form part of the roof of the carbid chamber, without in any way affecting the idea of the invention.

lared tightly upon it by means of washers and nuts. This rod extends upwardlyand freely-moving through the pipe V, and

above it to a suitable height. Its end is threaded some distance so to allow the nuty Y, considerable vertical motion. A longitudinal groove is cut in the body of this rod to receive` and slide upon the end of a screw,

or pin, Z, set in the pipef or 'casing through which the rodworks.- This construction allows the Arod to move up` and down freely,

but prevents any' rotary motion of the rod when the nut Y, is turned, and thus savesI injury to the diaphragm, orto its connection with the rod.

When the nut Y, seats upon the top of the pipe V, or casing U, if this should form the.

cover, or part of the roof, of. the carbid chamber, and is further screwed down, it

raises the rod .till'gthe stopper N is caused t0 be firmly seatedin the Vmouth 'O. This makes it impossible for the motion of the vehicle to rattlecarbid down into the generating chamber when the machine is not in use. This whole construction is so, made that it can be easily `removed at any time for examination, or repairs, simply by'taking off the cover D, to which it is all attached. t g' The weight Z, is provided with a hole in the bottom to receive the end of the rod R. This weight is sufficient to give the required gas pressure upon the diaphragm, and when the fgas pressure is removed, it forces the diaphragm downward into the curve of the lower broken line, so that the valve-stem R and lug T, being also thrust downward, the cylinder Q, is free to descend by force of gravitation to close the mouth O. This closure is alwaysV automatically secured when carbid is introduced into-the chamber; andalso, if ever the diaphragm'should become ruptured, so that further feeding of carbid is stopped.

The cap a, protects the end of the rod R',

over thel nipple and effects a tight joint by means of the packing c. The intake trap e, communicates with the cylinder A, by means of the pipe f. It consists of a small chamber partly filled with some liquid, a pipe h, fixed through the top of the chamber with its end immersed in the` liquid, and a nipple g, through which the liquid is introduced. This'nipple is closed by a cap. When the machine lis putout of 'commission by screwing down the nut Y, and the pressure within is reduced by absorption of gas in the water (ten volumes of water dissolve eleven volumes of acetylene), air is admitted through the intake trap to balance the pressure in the manner obvious to any one acquainted with the principles of pneumatics. Without this provision, the water might rise high enough to wet the carbid in the chamber B.

The operation of the machine is as follows: The whole lower part` of it is immersed in water'to a suitable depth, or the external vessel, with which the pipe P, communicates, is filled with water till it covers the bottom of the chamber C: The chamber B is filled with carbid. The rod R is drawn up slowly. As the cylinder Q, is raised, carbid slides under it, and through the mouth 0, and past the stopper N, into the water of the generating chamber. The evolution of gas forces the diaphragm upward into the curve of the upper broken line and pushes the water downward through the pipe P.\ The upward motion of the diaphragm, causes the stopper N, to check the fall of carbid; while the recession of the water leaves but little-in the generator to splash. As the gas is consumed, or allowed to escape through the service pipe J, the diaphragm settlesand water returns into the bottom of the generator, decomposing any carbid, which may have fallen there after its recession, before more carbid is caused to fall. Thus feeding'follows checking successively until the charge of carbid is exhausted. `The residuum in the external vessel must then be replaced with fresh water, and the carbid chamber again filled with carbid. When the external body of 'wateris a river, pond, or the sea, theresiduum is always automatically removed.

Having thus full-y described my invention, I claim as new and desire to secure by Letters Patent:

v1. In an acetylene generator, a carbid reageer quired gas pressure, a longitudinal groove in its body adapted to engage a point to prevent rotary motion of said rod when said nut is turned, a valve-stem pivotally sus? pended from the end of said rod just below said diaphragm, a guard to protect' said valve-stem from carbid, a stop to save said diaphragm from the downward strain oit said weight, and a conic'al stopper attached" to the lower end of said valve stem and adapted to close and open the mouth ofthe carbid chamber as said diaphragm is forced upward or depressed.

2. ln an acetylene generator, a carbid chamber, a generating chamber, adapted to be surrounded by a body of water, which is iii free communication with the water within said generating chamber, and provided with an air-intake trap to prevent the 'water level within the generating chamber rising higher than that outside, in combination with mechanism for automatically feeding carbid into water, consisting of an expansible diaphragm, a diaphragm casing fastened to the roof of said carbid chamber, a rod passing tightly through the center of said diaphragm, a eedchecking nut screwed upon the upper portion of said rod, a weight upon its top, a longitudinal groove in its body engaging a point to prevent rotary motion of said rod when said nut is turned, a valve-stem pivotally suspended from the end of said rod just below said diaphragm, a guard to protect said valve-stem from contact with carbid, a stop .to save said diaphragm from the downward strain of said weight and a conical stopper attached rto the lower end of said valve-stem and adapted to close and open the mouth of the carbid chamber as said diaphragm is forced upward or depressed.

3. ln an acetylene generator, acarbid chamber, a generating chamber, an eXpansible diaphragm, a diaphragm casing fastened to the roof of said carbid chamber, a rod passing tightly through the center of said diaphragm, a feed-checking nut screwed upon the upper port-ion of said rod, a weight upon its top, a longitudinal groove in its body engaging a point to prevent rotary motion of said rod when said nut is turned, a valve-stem pivotally suspended from the end of said rod just below said diaphragm, a guard to protect said valvestem from carbid, a stop to save said diaphragm from the downward strain of said weight, a conical stopper attached to the lower end of said valve-stem and adapted to close and openthe mouth. of said carbid chamber assaid diaphragm is forced .upward or depressed, in combination with an automatic feed check, consisting kof aA hollow-end cylinder sliding on saidvalve stern and adapted to close the mouth of said carbid chamber on the inside'thereot, and alug tmouth' of the'carbid chamber, said' lug holds -sa-id automatic feed-check cylinder in its- 'highest position, and when said weight forces said conical stopper into its lowest positio-n, said automatic feed-check cylinder rests with its circumferential edge upon the inner surface of the carbid chamber around the mouth thereof automatically dosing it. l

4r. lin an acetylene generator, a generating chamber provided with an air-intake trap, a carbid chamber and a. feed-stopping device, consisting of a rod, an expansible diaphragm collared tightly upon said rod, a casing to support said diaphragm, a valvestem pivotally attached to said rod just below said diaphragm, a conical stopper attached to the lower end of said valve-stem, and a nut on the top of said rod, which is adapted,A when screwed down, to keep the mouth oit said ,carbid chamber closed by holding said conical stopper tirmly therein.

5. lin an acetylene generator, a carbid chamber and mechanism forfeeding carbid into water, in combination with a generating chamber provided with an air-intake trap, a conical bottom and communicating with an external body of water by means of a pipe connection with the lowest point o said conical bottom, whereby splashing is prevented from lack of water in said generating chamber.

6. lln an acetylene generatona generating chamber and -mechanism tor feeding carbid into water, in combination with a carbid chamber having for part of its rootq a broad cover and for part of its bottom a trustoconical section, said feeding mechanism, said broad cover, and said rusto-conical section being muti'ially and rigidly attached tov gether whereby the entire feed-mechanism is taken from the body of the machine by the removal of saidbroad cover.

7. lin an acet lene generator, a carbid chamber, a carbid-feed checking device, a generating chamber with tunnel-shaped bottom, communicating with an external water supply, and an air-intake trap, whereby water in said generating chamber is controlled when the generator is not in use.

8. lin an acetylene generator, a carbid chamber having a broad cover in its root, with the entire feed mechanism attached thereto, and the funnel-shaped bottom ot said carbid chamber in sections substantially as described, whereby said feed-mechanism may be easily removed at any time for cleaning; or repairs; in combination with `the hereinbetore described feed-mechanism and a generating chamber. A 9.' lin an acetylene generator, a generating chamber having an air-intake trap, a iinnelshaped bottom with a pipe connecting its lle central lowest part with en external body higher than .that outside when the machine of water; a carbid chamber with broad cover` is not in use. in its roof with the entire feed-mechanism v attached thereto; and el feed-stoppin device, all as described and in such com ina- Witnesses: tion as to prevent Waste of carbidl and the CHARLES E. BRYANT, water level Within vlslne generator' rising l RALPH H. ANGELI..

EDMUND R. ANGELI. 

